For bearing on finished surfaces, such as milled ends and ends of fitted bearing stiffeners, or on the projected area of pins in finished holes, the allowable stress in ASD is
where Fy is the specified minimum yield stress of the steel, ksi. When the parts in contact have different yield stresses, use the smaller Fy (Table 7.19).
The allowable bearing stress on expansion rollers and rockers, kip/ in, is
where d is the diameter of roller or rocker, in (Table 7.20).
Allowable bearing stresses on masonry usually can be obtained from a local or state building code, whichever governs. In the absence of such regulations, however, the values in Table 7.21 may be used.